Re: IMHO it's all a con.
I had an engineer call about a year ago. He replaced everything from the pole (It's overhead round here). Which he said was in very bad shape. It didn't improve matters though. I got the impression that the recent caller did not want to do the job, so declared the line OK. I suggested that all he had to do was to connect me, at the cabinet to a spare pair, and again at the exchange. Which would have only left the cabinet to the pole to be faulty. That had been replaced when they fitted new poles a few years back,. So should have been OK.